Miniature aeroplane



Nov. 12, 1929.

I M. F. TREVINO MINIATURE AEROPLANE Filed Jan. 9, 1.928

INVENTOR l! aka/2 Wen r20 BY Patented Nov. 12, 1929 MANU L FALCON rnnvmo, or oRYsTAL 'cnY, rnxiis MINIATURE AEROPLANE Application filed January}, 1928. Serial No. 245,546.

This invention relates to a, miniature aeroplane especially adapted for amusement pur poses or for advertising or publicity purposes as may be desired.

The object of the invention is to provide a self propelled aeroplane embodying a means of ascending and descending, which will per mit my improve'daeroplane to be navigated through the air automatically.

' A. further object of the invention is to provide a miniature aeroplane of novel'construc tion. and arrangement of parts, embodying certain new features hereinafter: more fully described, claimed and illustrated in the accompanylng drawing.

Fig. 1 is a perspect ve View of my improved miniature aeroplane as same wouldappear" when in flight. H v

Fig. 2 is a side elevational viewthereof.v

. Fig. 3 is an enlarged side elevational view' of the motor embodied therein,for the pur pose ofpropelling my improved machine.

' Fig. 4 is a side 'elevational viewJof theelevator' mchanism provided for the purpose,

.of ascending;

Fig. 5 is a transverse'sectional view taken on the line 5-:5 of Fig. 4.

Fig. 6 is a similar sectional-view taken on the line 66 of Fig. 7. r r

Fig. 7 is a top plan View of the descending mechanism as embodied in my improved 'device.

Fig. 8 is a schematic side elevational view of the ailerons and elevators shown connected with a flexible'control. 1 I

InFigs. '1 and 2 of the accompanying draw-. ing, I have shown a miniature aeroplane of the biplane, tractor type, comprising a fuselage 10 or body, landing gear 11, upper and lower wings 12 and 13, struts 14, stabilizers 15 and rudder 16. The ailerons 17 and 18 are hinged to the upper wing 12 in the usual I The elevators 19 and 20 are similarly hinged to the stabilizers 15. The above mentioned elements are those of an ordinary aeroplane of the type mentioned. It is understood that I do not necessarily limit the use of my invention to the particular type of aeroplane above described, but to all classes and types of aeroplanes, or heavier than air machines, such as are commonlyused for flying purposes. 1 e

The motor 21, preferablyof the four cylinder, four cycle type is mounted in the forward portion of the fuselage 10, and is 'operatively connected to the usual propeller22, preferably secured tothe forward extremity of the crank shaft 23 of the motor, 21. The tank 24, of hollow cylindrical construction, adapted to hold air under pressure ismounted under the upper wing 12 and is provided with a filler cap 25, as a means of filling the said tank with compressed air. The propeller,

shaft. 23 is connected to an air pump 23 thru bevel gears 23 anddrives thepiston thru crank 23". The pump isfprovidedwith'the usual air inlet 23 and Outlet 23 The tank 24 is connected by means of the flexible tube A valve 27 isinterposed in the tube;26, .for the purpose of regulating the air supply lto the motor 21 The above described construc-' tion is such-as willipermitthecompressed.

air in the tank 24 to operate the motor 21, for

the purpose of rotating: the propeller, as a means of propelling my improved miniature aeroplane.-

f ,The shaft 28is rotatively mounted inthe;

' 26 to theintake manifold 27 of the motor 21..

crank case 29 of the motor 21, and is operas tively connected thereto, preferably to the crank shaft or cam shaft of the motor 21'. The bevel gear 30 is secured to theshaft 28.,

and meshes with Ithebevel pinion31, secured to the governor shaft 32, which extends vertically upwardly through an" aperture formed-in the crank case 29. v The governor balls 33 and 34 are. secured to the free ex tremities of thelevers 35 and 36', respectively,: pivotally secured to the head 37,, offthe' governor shaft 32, as at 38- and 39,.respec tively, The rods 40 and 41, are pivotally A secured to the levers 35 and 36, respectively, intermediate thereof, and are]v similarly ably mounted on the shaft 32. p r

The lever 45, is pivotally mounted inter me'diately on the pin 46 carried in the bracket 47, secured to the crankcase 29 and: is provided with a forked extremity 48, adapted to extend around the shaft 32. -The" secured to the collar 42, as at 43 and 44, slid- 1 such as will permit of the free movement of.

the lever 53 in counter clockwise direction. The extended extremity of the lever 53 has formed therein an'elongated aperture. 56,

adaptedto receive'the pin 57, secured to the I extremity of the above mentioned lever 45.

The ailerons 17 and-1 8, and the elevators l9 and 20 are normally held ina somewhat. angular-1y upwardly inclined position by c meansof the tension springs 58, 5,9, 60 and 61.

carried in the brac I cured to the flexiblemembers 67, secured to Flexible members 62 and 6.3 are, attached to the aileronsandto' the. elevators, and extend therefrom over pulle' s 64 and 65 respectively liets 66 secured toiany suitable portionof my improved aeroplane. The abovementioned flexible members are sea similar flexible member 68,. which'is extendedover asimilarpulley 65.1 The "flexible member 68 is secured to the extremity of the above mentioned lever A similar flexible member '69'is securedintermediately to the flexible member 68', and is securedto the free above mentioned shaft 7 v The above described construction is. such.

extremity of thelev'er 70, mounted on the r as will permit the ailerons 17 aha-18, and the a raised positions "and cause my improved l elevatorsl}? and 2.0, when the motor 21 is started tomove downwards from normally aeroplane to ascend, and which will permit the governor balls 33 and 34L'to assume'an. a proximate horizontal position as shown Eovefby'the referencenumerals '71 and 72' respectively, when the motor 2lattains its 7 i maximum speed. It is obvious that the latter described position of the governor balls will cause theleve'r 45to pull the flexible member 6.8,,a11d the, above mentioned flexible members Secured thereto.,'as. a means of hinging the ailerons 17' and 18,-and the elevators19 and 20, horizontal, which will causemy improved aeroplane. to' assume an approximate horizontal fiyingposition. It is further obvious that. when the supply of compressed air in betank 24 has been exhausted, that the;

governor'balls 33. and 34, will assume their normal position which will cause the lever 53 to. be partially rotated in a clockwise position, the lever 70, is similarlypartially rotated in a clockwise position andwill pull the flexiblei member 69, and the flexible members secured thereto, which will causethe. ailerons 17 and 1 8, and the elevators 19 and 20 to assume a somewhatangularly upward position, as designated by the reference numerals, as a means of causing myimproved aeroplane to descend to the groun While I have shown and described a preferred embodiment of my invention, it is to. be understood that I do not limit myself to the precise construction herein disclosed and the right is reservedto all changes and modifications comingjwithin the scope of the invention as defined in the appended claims.

Having thus described my invention, what I I claim as new and desire to protect by Letters Patent of the United States is as follows v 1. In a device of the class described, ailever pivotally supported intermediate of its ends, and at one'end connected with a governor so that this end moves upwards upon governor speed increases anddownwardsupon de creases, a flexible member connected with the other end-of the said lever for. connection with ailerons and elevators of the dev1ce,'a second lever pivotally attached 'onthe secondmen= tioned end of the-said lever, and mountedon a shaft and arranged for rotating the shaft in one direction, a thirdlever also mounted on the said shaft, and a flexiblemember attached onthethird lever and on to the said flexible" member. r

2. In a device of the classdescribed, a lever pivotally supported intermediateof' its ends,

that this end moves upwardsnpon governor speed increases and downwardsfup'on deand at one end connected with'a-governor so creases, a flexible member connected with the second leverpivotally attachedon the second mentioned end of the sa1dlever,and mounted 7 other end ofthe said lever. for connection, with ailerons and elevators of'the vdevice, a j

on a shaft-and arrangedfor rotatingthe'shaft in one direction by reason. of rollers engaging in cam openings, a third jlever alsomounted on the said shaft, and a flexible member attached on the third lever and onto. the said flexible member.

In testimony whereof Ihave afiixed signature- 7 I 1 MANUEL FALCON TREVINO, 1 

